+wxSize is used throughout wxWindows as well as wxPoint which, although almost
+equivalent to wxSize, has a different meaning: wxPoint represents a position
+while wxSize - the size.
+
+\pythonnote{wxPython defines aliases for the {\tt x} and {\tt y} members
+named {\tt width} and {\tt height} since it makes much more sense for
+sizes.
+}
+
+\wxheading{Derived from}